Insulating tubular iron posts



( No Model.)

W. H. OBEIRNE. INSULATING TUBULAR IRON POSTS.

N0. 403,482. Patented May 14, 1889..

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UNITED STATES PATENT OFFICE.

VILLIAM II. OBEIRNE, OF ELGIN, ILLINOIS, ASSIGNOR TO THE STAR IRON TOIVER COMPANY, OF FORT IVAYNE, INDIANA.

INSULATING TUBULAR IRON POSTS.

SPECIFICATION forming part of Letters Patent No. 403,482, dated May 14, 1889.

Application filed December 3, 1888. Serial No. 292,527. (No model.)

To LZZ whom it may concern.-

Be it known that I, VILLIAM II, OBEIRNE, a citizen of the United States, and a resident of llgin, in the county of Kane and State of 5 Illinois, have invented certain new and useful Improvements in Insulating Tubular Iron Posts; and I do declare the following to be a full, clear, and exact description of the inven tion, such as will enable others skilled in the ro art to which it appertains to make and use the same, reference being had to the accompanying drawings, and to letters or figures of reference marked thereon, which form a part of this specification.

15 Figure I of the drawings is a representation of this invention, and isa vertical seetion. Fig. 2 is a side view. Fig. 3 is a side view of the insulator.

This invention has relation to insulators for 2o tubular posts g and it consists in the construetion and novel combination of devices, all as hereinafter set forth, and pointed out in the appended claims.

In the accompanying` drawings, the letter A z5 designates a tubular iron post separated at the point B, so that it is in two sections.

C is the insulator, which consists, preferably, of a piece of dry hard wood turned at each end of the proper diameter to t the interior of the tube-sections. Between these turned ends is left the annular projection D around the insulator, this projection being usually about three-quarters of an inch in thickness, and being designed to separate the 35 ends of the tubular sections by that distance when its turned ends are inserted into the ends of said sections.

Around the lower end of the upper section of the tubular post is turned a thread, as at E, and F is a rain-guard in the form of an inverted cup, which has an opening in its upper portion threaded to engage the thread of the post-section. The skirt of the guard extends outward and downward over the middle iiange of the insulator-coupling C and somewhat be- 45 low the level of the upper end of the lower section of the tubular post. This guard extends clear of the wood and lower pipe, being at no point nearer than about three-quarters of an inch. The guard having been screwed 5o in position upon the upper section of the post, one end of the insulator-block is forced therein until the iiange of the block engages the end of the tubular section. Then the lower section is forced upon the other end of 5 5 the block until its end engages the lower face of the flan ge thereof.

Having described this invention, what I claim, and desire to secure by Letters Patent, is-

l. The insulator for tubular posts, consisting of the insulator-block having oppositelyturned ends and intermediate annular flange, and the cup-shaped rain-guard, substantially as specified. 6 5

2. The combination, with the tubular postsections, of the insulator-block having turned ends formed into said sections and an annu` lar liange separating the same, and the inverted-cup-shaped guard engaging the lower 7o end of the upper section and extending below and clear of the iiange and the end of the lower section, substantially as specified.

In testimony7 whereof I affix my signature in presence of two witnesses.

\YIILIAM II. OBEIRNE.

Vitnesses:

WM. H. MOORE, L. H. SoRUGGs. 

